[MINOR] use s->frt_addr as the server's address in transparent proxy

There's no point trying to check original dest addr with only one
method when doing transparent proxy as in full transparent mode,
the real destination address is required. Let's copy the one from
the frontend.

diff --git a/src/backend.c b/src/backend.c
index 1617a1877c43d380dfd4d9385f6aeaf52367cedd..5ea6590d892db85cf3d5829ac22934d0c3c35c53 100644 (file)
--- a/src/backend.c
+++ b/src/backend.c
@@ -1015,12 +1015,13 @@ int assign_server_address(struct session *s)
        }
        else if (s->fe->options & PR_O_TRANSP) {
                /* in transparent mode, use the original dest addr if no dispatch specified */
-               socklen_t salen = sizeof(s->srv_addr);
+               if (!(s->flags & SN_FRT_ADDR_SET))
+                       get_frt_addr(s);
 
-               if (get_original_dst(s->cli_fd, &s->srv_addr, &salen) == -1) {
-                       qfprintf(stderr, "Cannot get original server address.\n");
-                       return SRV_STATUS_INTERNAL;
-               }
+               memcpy(&s->srv_addr, &s->frt_addr, MIN(sizeof(s->srv_addr), sizeof(s->frt_addr)));
+               /* when we support IPv6 on the backend, we may add other tests */
+               //qfprintf(stderr, "Cannot get original server address.\n");
+               //return SRV_STATUS_INTERNAL;
        }
        else if (s->be->options & PR_O_HTTP_PROXY) {
                /* If HTTP PROXY option is set, then server is already assigned